Add ability to have favorite filters
In the older version of THg, I found myself increasingly relying on the various radio buttons (usually I switched between All, Heads and the branch filter drop down).
With the new Qt version you can filter and get the same results, but it is more steps and less easy to do.
It would be really nice to add an ability to have favorite filters. This could be very similar to say how bookmarks work in webpages. For the feature itself, perhaps clicking the ... button could pop up a menu whereby you some number of favorite queries, perhaps another submenu for more of them, and finally an action for creating one.
Probably the Revision Set Query dialog could then provide some functionality for saving the query, editing previous queries, etc
This query functionality looks to have replaced a lot of the other more manual UI features as it is much more powerful. I then think it advantageous to build out the UI to support more of these queries similar to browser bookmarks/favorites.